CN204188793U - A kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment - Google Patents
A kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment Download PDFInfo
- Publication number
- CN204188793U CN204188793U CN201420519862.0U CN201420519862U CN204188793U CN 204188793 U CN204188793 U CN 204188793U CN 201420519862 U CN201420519862 U CN 201420519862U CN 204188793 U CN204188793 U CN 204188793U
- Authority
- CN
- China
- Prior art keywords
- resistance
- transceiver
- electric capacity
- energy meter
- packet sending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment, belong to instrument check field.Little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment pass through the running parameter of control module setting data processing module, modulus sampling module carries out small-signal sampling to the three road voltages inputted, current standard signal, and send sampled value to data processing module, light packet sending and receiving module communicates to receive or send message information with external lan by optical Ethernet interface, data processing module is by obtaining final data to the data operation process of input, and final data is sent to control module, final data is sent to touching display screen by control module.The utility model, by the little analog quantity electric energy meter of described one and digitalized electrical energy meter calibration equipment, achieves the verification simultaneously meeting three-phase electric energy meter and digitalized electrical energy meter.
Description
Technical field
The utility model relates to instrument check field, particularly the little analog quantity electric energy meter of one and digitalized electrical energy meter calibration equipment.
Background technology
Current, life and the electric energy of the mankind are closely bound up, and electric energy not only relates to daily routines but also and commercial production, the development in science and technology interwoveness of people.Along with electric power market demand, electric energy meter Industry Quick Development, from traditional electric energy meter to intelligent electric energy meter.Electric energy meter must carry out electric energy accurate Calculation while function increases, as a fair gager between electrical energy production person and consumer.Therefore, electric energy meter checking device is a kind of important calibration equipment in measurement unit and power supply department.
At present, the application of the electric energy measuring equipments such as three-phase electric energy meter and digitalized electrical energy meter tester is more and more extensive, but the device that simultaneously can meet three-phase electric energy meter and digitalized electrical energy meter verification is also few, and it is low to there is verification process automaticity, complex operation, the problems such as process is complicated.
Utility model content
The purpose of this utility model there are provided a kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment, is intended to solve the existing problem that simultaneously can not meet three-phase electric energy meter and digitalized electrical energy meter verification.
The utility model is achieved in that a kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment, comprising:
For providing the power module of supply voltage;
For showing the touching display screen of test function, test parameter and final data;
For selecting the keyboard of described test function and described test parameter;
For the running parameter of setting data processing module, and the described final data received is sent to the control module of described touching display screen;
For by obtaining described final data to the data operation process of input, and described final data is sent to the data processing module of described control module; Described data comprise sampled value and message information;
Carry out small-signal sampling for the three road voltages to input, current standard signal, and send described sampled value the modulus sampling module of described data processing module to;
For communicating with external lan the light packet sending and receiving module receiving or send described message information by optical Ethernet interface;
Described power module is connected with described control module and described data processing module, described modulus sampling module is connected with described data processing module, described smooth packet sending and receiving module is connected with described data processing module, described data processing module is connected with described control module, and described control module is connected with described touching display screen and described keyboard.
The beneficial effect that the technical scheme that the utility model provides is brought is:
From above-mentioned the utility model, due to the running parameter by control module setting data processing module, modulus sampling module is to three road voltages of input, current standard signal carries out small-signal sampling, and send sampled value to data processing module, light packet sending and receiving module communicates to receive or send message information with external lan by optical Ethernet interface, data processing module is by obtaining final data to the data operation process of input, and final data is sent to control module, final data is sent to touching display screen by control module, therefore, achieve the verification simultaneously meeting three-phase electric energy meter and digitalized electrical energy meter.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the theory diagram of a kind of little analog quantity electric energy meter of the utility model and digitalized electrical energy meter calibration equipment first embodiment;
Fig. 2 is the circuit diagram of a kind of little analog quantity electric energy meter of the utility model and digitalized electrical energy meter calibration equipment power module;
Fig. 3 is the circuit diagram of a kind of little analog quantity electric energy meter of the utility model and digitalized electrical energy meter calibration equipment light packet sending and receiving module.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
The theory diagram of a kind of little analog quantity electric energy meter of the utility model and digitalized electrical energy meter calibration equipment first embodiment, see Fig. 1, comprising: for providing the power module 10 of supply voltage; For showing the touching display screen 20 of test function, test parameter and final data; For selecting the keyboard 30 of test function and test parameter; For the running parameter of setting data processing module, and the final data of reception is sent to the control module 40 of touching display screen; For by obtaining final data to the data operation process of input, and final data is sent to the data processing module 50 of control module; Above-mentioned data comprise sampled value and message information; Carry out small-signal sampling for the three road voltages to input, current standard signal, and sampled value is sent to the modulus sampling module 70 of data processing module; For communicating with external lan the light packet sending and receiving module 60 receiving or send message information by optical Ethernet interface; Power module 10 is connected with control module 40 and data processing module 50, modulus sampling module 70 is connected with data processing module 50, light packet sending and receiving module 60 is connected with data processing module 50, data processing module 50 is connected with control module 40, and control module 40 is connected with touching display screen 20 and keyboard 30.
Above-mentioned message information is the IEC61850-9-1/2 data of standard.
In concrete enforcement, control module 40 is connected by rgb interface with touching display screen 20, modulus sampling module 70 is connected by SPORT interface with data processing module 50, light packet sending and receiving module 60 is connected by Ethernet interface with data processing module 50, and control module 40 is connected by Ethernet interface, serial line interface and SPORT interface with data processing module 50.
Modulus sampling module 70 comprises split core type current transformer.Make field wiring easy, can directly access without the need to turn-off current loop.
In concrete enforcement, touching display screen 20 can be electric resistance touch-control display screen, and catercorner length can be 8.4 inches.Keyboard 30 by pluggable interface link control module 40, can be convenient for changing keyboard or is directly dismantled by keyboard.
In concrete enforcement, modulus sampling module 70 is adoptable is high precision analogue conversion chip, can carry out LIULUTONG road simultaneously sample, and sends the data after sampling to data processing module 50.
User can start every test function of control module 40 by keyboard 30 and touching display screen 20, and adjusts every test parameter intuitively by touching display screen 20, or checks test result.
Power module comprises power management chip PU1, first LED 34, diode D6, first inductance PL1, first electric capacity PC1, second electric capacity PC2, 3rd electric capacity PC3, 4th electric capacity PC4, 5th electric capacity PC5, 6th electric capacity PC6, first resistance PR1, second resistance PR4, 3rd resistance PR5, 4th resistance PR6, 5th resistance PR7, 6th resistance PR8, 7th resistance PR9, 8th resistance PR10, 9th resistance PR11, tenth resistance PR12, 11 resistance PR13, 12 resistance PR14 and the 13 resistance PR15, the charging Input voltage terminal of power management chip PU1 and the first power supply, the first end of the first electric capacity PC1, the first end of the second resistance PR4, the first end of the first resistance PR1, the analog device power input of power management chip PU1, the first end of the 3rd electric capacity PC3 connects, the charging first state end of power management chip PU1 is connected with the first negative electrode of the first LED 34, the charging second state end of power management chip PU1 is connected with the second negative electrode of the first LED 34, the timing of power management chip PU1 is connected with the first end of the second electric capacity PC2 with termination control end, the Enable Pin of power management chip PU1 and the analog device power ground end of power management chip PU1, second end of the second electric capacity PC2, second end of the 3rd electric capacity PC3, the first end of the 4th electric capacity PC4, the first end of the 3rd resistance PR5, the first end of the 4th resistance PR6, the first end of the 6th electric capacity PC6, the first end of the 6th resistance PR8, the first end of the 9th resistance PR11, the first end of the tenth resistance PR12, the first end of the 11 resistance PR13, the first end of the 12 resistance PR14, the first end of the 13 resistance PR15 connects altogether, the output voltage analog feedback adjustable side of power management chip PU1 and the first end of the 8th resistance PR10, second end of the 9th resistance PR11 connects, the charging current outputting inductance link of power management chip PU1 and the negative electrode of diode D6, the first end of the first inductance PL1 connects, the power supply ground input end of power management chip PU1 and the anode of diode D6, the first end of the 5th electric capacity PC5, second end of the first electric capacity PC1, second end of the second resistance PR4, second end of the tenth resistance PR12, second end of the 11 resistance PR13, second end of the 12 resistance PR14, second end of the 13 resistance PR15 connects and power supply ground altogether, the current sample input end of power management chip PU1 and second end of the first inductance PL1, second end of the 5th electric capacity PC5, the first end of the 7th resistance PR9, second end of the 6th electric capacity PC6 connects, the battery voltage sampling input end of power management chip PU1 and second end of the 7th resistance PR9, second end of the 8th resistance PR10 is the voltage output end connection of power module, the charging current first of power management chip PU1 arranges end and is connected with second end of the 3rd resistance PR5, the charging current second of power management chip PU1 arranges end and is connected with second end of the 4th resistance PR6, the temperature detection input end of power management chip PU1 and the first end of the 5th resistance PR7, the first end of the 6th resistance PR8 connects, the temperature detection internal adjustment voltage end of power management chip PU1 and second end of the 4th electric capacity PC4, second end of the 5th resistance PR7 connects, and second end of the first resistance PR1 is connected with the anode of light emitting diode LED34.In concrete enforcement, power management chip can be the power management chip that model is BQ24105IRHLRQ1.
Because the first power supply can be the battery of 12V, can on-the-spot little analog quantity electric energy meter and digitalized electrical energy meter be verified so achieve.
Light packet sending and receiving module comprises transceiver U402, exclusion RA403, the second light emitting diode LED7, the 3rd LED 8, second inductance L 404, the 3rd inductance L 405, the 7th electric capacity C412, the 8th electric capacity C416, the 9th electric capacity C417, the tenth electric capacity C418, the 11 electric capacity C421, the 14 resistance R411, the 15 resistance R414, the 16 resistance R415, the 17 resistance R416, the 18 resistance R413, the reception data first end of transceiver U402 is the first output terminal of light packet sending and receiving module, reception data second end of transceiver U402 is the second output terminal of light packet sending and receiving module, reception data the 3rd end of transceiver U402 is the 3rd output terminal of light packet sending and receiving module, reception data the 4th end of transceiver U402 is the 4th output terminal of light packet sending and receiving module, the receive clock end of transceiver U402 is the 5th output terminal of light packet sending and receiving module, the carrier sense end of transceiver U402 is the 6th output terminal of light packet sending and receiving module, the collision detection end of transceiver U402 is the 7th output terminal of light packet sending and receiving module, the reception data live end of transceiver U402 is the 8th output terminal of light packet sending and receiving module, the transfer clock end of transceiver U402 is the 9th output terminal of light packet sending and receiving module, the transmission Enable Pin of transceiver U402 is the first input end of light packet sending and receiving module, the transmission data first end of transceiver U402 is the second input end of light packet sending and receiving module, transmission data second end of transceiver U402 is the 3rd input end of light packet sending and receiving module, transmission data the 3rd end of transceiver U402 is the four-input terminal of light packet sending and receiving module, transmission data the 4th end of transceiver U402 is the 5th input end of light packet sending and receiving module, the data incoming/outgoing management end of transceiver U402 is the first input/output terminal of light packet sending and receiving module, the data management clock end of transceiver U402 is the 6th input end of light packet sending and receiving module, optical fiber/UTP the Enable Pin of transceiver U402 is connected with the 14 resistance R411 first end, 14 resistance R411 second end, the 3.3V digital power input end of transceiver U402, 8th pin of exclusion 403, the first end of the 17 resistance R416, the first end of the 3rd inductance L 405 is connected to second source altogether, the 25MHz crystal oscillator input end of transceiver U402 is the 7th input end of light packet sending and receiving module, the power supply feedback output terminal of transceiver U402 and the first end of the second inductance L 404, the first end of the 7th electric capacity C412, the first end of the 8th electric capacity C416 connects, the power supply feedback input end of transceiver U402 and the second end of the second inductance L 404, the first end of the 11 electric capacity C421 connects, second end of the 7th electric capacity C412, second end of the 8th electric capacity C416, second end of the 11 electric capacity C421, the first end of the 9th electric capacity C417, the first end of the tenth electric capacity C418, the negative electrode of the second LED 7, the first end of the 15 resistance R414, 2nd pin of exclusion RA403, 4th pin of exclusion RA403, 6th pin of exclusion RA403, the first end of the 18 resistance R413 is connected to power supply ground altogether, the 3.3V analog power input end of transceiver U402 and second end of the 9th electric capacity C417, second end of the tenth electric capacity C418, second end of the 3rd inductance L 405 connects, the transmission output cathode end of transceiver U402 is the tenth output terminal of light packet sending and receiving module, the transmission output negative pole end of transceiver U402 is the 11 output terminal of light packet sending and receiving module, the reception input positive terminal of transceiver U402 is the 8th input end of light packet sending and receiving module, the reception input negative pole end of transceiver U402 is the 9th input end of light packet sending and receiving module, the conflict LED end of transceiver U402 is connected with exclusion the 1st pin, the connection 100/ACT LED of transceiver U402 holds and the 15 resistance R414 second end, 16 resistance R415 first end connects, the connection 10/ACT LED end of transceiver U402 is connected with exclusion the 3rd pin, the full duplex LED end of transceiver U402 is connected with exclusion the 5th pin, the connection LED of transceiver U402 holds and exclusion the 7th pin, 3rd LED 8 negative electrode connects, first of transceiver U402 latches end, second of transceiver U402 latches end, the 3rd of transceiver U402 latches end, the battery saving mode end that goes offline of transceiver U402, the 4th of transceiver U402 latches end and is connected to second source altogether, the transmission bias resistor link of transceiver U402 is connected with second end of the 18 resistance R413, the reset terminal of transceiver U402 is the tenth input end of light packet sending and receiving module, 16 resistance R415 second end is connected with the anode of the second LED 7, second end of the 17 resistance R416 is connected with the anode of the 3rd LED 8.In concrete enforcement, transceiver can be the transceiver that model is RTL8201.
The utility model embodiment is by the running parameter of control module setting data processing module, modulus sampling module is to three road voltages of input, current standard signal carries out small-signal sampling, and send sampled value to data processing module, light packet sending and receiving module communicates to receive or send message information with external lan by optical Ethernet interface, data processing module is by obtaining final data to the data operation process of input, and final data is sent to control module, final data is sent to touching display screen by control module, therefore, achieve the verification simultaneously meeting three-phase electric energy meter and digitalized electrical energy meter.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. little analog quantity electric energy meter and a digitalized electrical energy meter calibration equipment, is characterized in that, comprising:
For providing the power module of supply voltage;
For showing the touching display screen of test function, test parameter and final data;
For selecting the keyboard of described test function and described test parameter;
For the running parameter of setting data processing module, and the described final data received is sent to the control module of described touching display screen;
For by obtaining described final data to the data operation process of input, and described final data is sent to the data processing module of described control module; Described data comprise sampled value and message information;
Carry out small-signal sampling for the three road voltages to input, current standard signal, and send described sampled value the modulus sampling module of described data processing module to;
For communicating with external lan the light packet sending and receiving module receiving or send described message information by optical Ethernet interface;
Described power module is connected with described control module and described data processing module, described modulus sampling module is connected with described data processing module, described smooth packet sending and receiving module is connected with described data processing module, described data processing module is connected with described control module, and described control module is connected with described touching display screen and described keyboard.
2. little analog quantity electric energy meter according to claim 1 and digitalized electrical energy meter calibration equipment, it is characterized in that, described control module is connected by rgb interface with described touching display screen.
3. little analog quantity electric energy meter according to claim 1 and digitalized electrical energy meter calibration equipment, is characterized in that, described modulus sampling module is connected by SPORT interface with described data processing module.
4. little analog quantity electric energy meter according to claim 1 and digitalized electrical energy meter calibration equipment, is characterized in that, described smooth packet sending and receiving module is connected by Ethernet interface with described data processing module.
5. little analog quantity electric energy meter according to claim 1 and digitalized electrical energy meter calibration equipment, is characterized in that, described control module is connected by Ethernet interface, serial line interface and SPORT interface with described data processing module.
6. little analog quantity electric energy meter according to claim 1 and digitalized electrical energy meter calibration equipment, is characterized in that, described modulus sampling module comprises split core type current transformer.
7. little analog quantity electric energy meter according to claim 1 and digitalized electrical energy meter calibration equipment, it is characterized in that, described power module comprises power management chip, the first light emitting diode, diode, the first inductance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance and the 13 resistance;
The charging Input voltage terminal of described power management chip and the first power supply, the first end of described first electric capacity, the first end of described second resistance, the first end of described first resistance, the analog device power input of described power management chip, the first end of described 3rd electric capacity connects, the charging first state end of described power management chip is connected with the first negative electrode of described first light emitting diode, the charging second state end of described power management chip is connected with the second negative electrode of described first light emitting diode, the timing of described power management chip is connected with the first end of described second electric capacity with termination control end, the Enable Pin of described power management chip and the analog device power ground end of described power management chip, second end of described second electric capacity, second end of described 3rd electric capacity, the first end of described 4th electric capacity, the first end of described 3rd resistance, the first end of described 4th resistance, the first end of described 6th electric capacity, the first end of described 6th resistance, the first end of described 9th resistance, the first end of described tenth resistance, the first end of described 11 resistance, the first end of described 12 resistance, the first end of described 13 resistance connects altogether, the output voltage analog feedback adjustable side of described power management chip and the first end of described 8th resistance, second end of described 9th resistance connects, the charging current outputting inductance link of described power management chip and the negative electrode of described diode, the first end of described first inductance connects, the power supply ground input end of described power management chip and the anode of described diode, the first end of described 5th electric capacity, second end of described first electric capacity, second end of described second resistance, second end of described tenth resistance, second end of described 11 resistance, second end of described 12 resistance, second end of described 13 resistance connects and power supply ground altogether, the current sample input end of described power management chip and the second end of described first inductance, second end of described 5th electric capacity, the first end of described 7th resistance, second end of described 6th electric capacity connects, the battery voltage sampling input end of described power management chip and the second end of described 7th resistance, second end of described 8th resistance is the voltage output end connection of power module, the charging current first of described power management chip arranges end and is connected with the second end of described 3rd resistance, the charging current second of described power management chip arranges end and is connected with the second end of described 4th resistance, the temperature detection input end of described power management chip and the first end of described 5th resistance, the first end of described 6th resistance connects, the temperature detection internal adjustment voltage end of described power management chip and the second end of described 4th electric capacity, second end of described 5th resistance connects, and the second end of described first resistance is connected with the anode of described light emitting diode.
8. little analog quantity electric energy meter according to claim 1 and digitalized electrical energy meter calibration equipment, it is characterized in that, described smooth packet sending and receiving module comprises transceiver, exclusion, the second light emitting diode, the 3rd light emitting diode, the second inductance, the 3rd inductance, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 11 electric capacity, the 14 resistance, the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance;
The reception data first end of described transceiver is the first output terminal of described smooth packet sending and receiving module, reception data second end of described transceiver is the second output terminal of described smooth packet sending and receiving module, reception data the 3rd end of described transceiver is the 3rd output terminal of described smooth packet sending and receiving module, reception data the 4th end of described transceiver is the 4th output terminal of described smooth packet sending and receiving module, the receive clock end of described transceiver is the 5th output terminal of described smooth packet sending and receiving module, the carrier sense end of described transceiver is the 6th output terminal of described smooth packet sending and receiving module, the collision detection end of described transceiver is the 7th output terminal of described smooth packet sending and receiving module, the reception data live end of described transceiver is the 8th output terminal of described smooth packet sending and receiving module, the transfer clock end of described transceiver is the 9th output terminal of described smooth packet sending and receiving module, the transmission Enable Pin of described transceiver is the first input end of described smooth packet sending and receiving module, the transmission data first end of described transceiver is the second input end of described smooth packet sending and receiving module, transmission data second end of described transceiver is the 3rd input end of described smooth packet sending and receiving module, transmission data the 3rd end of described transceiver is the four-input terminal of described smooth packet sending and receiving module, transmission data the 4th end of described transceiver is the 5th input end of described smooth packet sending and receiving module, the data incoming/outgoing management end of described transceiver is the first input/output terminal of described smooth packet sending and receiving module, the data management clock end of described transceiver is the 6th input end of described smooth packet sending and receiving module, optical fiber/UTP the Enable Pin of described transceiver is connected with described 14 resistance first end, described 14 resistance second end, the 3.3V digital power input end of described transceiver, 8th pin of described exclusion, the first end of described 17 resistance, the first end of described 3rd inductance is connected to second source altogether, the 25MHz crystal oscillator input end of described transceiver is the 7th input end of described smooth packet sending and receiving module, the power supply feedback output terminal of described transceiver and the first end of described second inductance, the first end of described 7th electric capacity, the first end of described 8th electric capacity connects, the power supply feedback input end of described transceiver and the second end of described second inductance, the first end of described 11 electric capacity connects, second end of described 7th electric capacity, second end of described 8th electric capacity, second end of described 11 electric capacity, the first end of described 9th electric capacity, the first end of described tenth electric capacity, the negative electrode of described second light emitting diode, the first end of described 15 resistance, 2nd pin of described exclusion, 4th pin of described exclusion, 6th pin of described exclusion, the first end of described 18 resistance is connected to power supply ground altogether, the 3.3V analog power input end of described transceiver and the second end of described 9th electric capacity, second end of described tenth electric capacity, second end of described 3rd inductance connects, the transmission output cathode end of described transceiver is the tenth output terminal of described smooth packet sending and receiving module, the transmission output negative pole end of described transceiver is the 11 output terminal of described smooth packet sending and receiving module, the reception input positive terminal of described transceiver is the 8th input end of described smooth packet sending and receiving module, the reception input negative pole end of described transceiver is the 9th input end of described smooth packet sending and receiving module, the conflict LED end of described transceiver is connected with exclusion the 1st pin, the connection 100/ACT LED of described transceiver holds and described 15 resistance second end, described 16 resistance first end connects, the connection 10/ACT LED end of described transceiver is connected with exclusion the 3rd pin, the full duplex LED end of described transceiver is connected with exclusion the 5th pin, the connection LED of described transceiver holds and exclusion the 7th pin, described 3rd light-emitting diodes tube cathode connects, first of described transceiver latches end, second of described transceiver latches end, the 3rd of described transceiver latches end, the battery saving mode end that goes offline of described transceiver, the 4th of described transceiver latches end and is connected to described second source altogether, the transmission bias resistor link of described transceiver is connected with the second end of described 18 resistance, the reset terminal of described transceiver is the tenth input end of described smooth packet sending and receiving module, described 16 resistance second end is connected with the anode of described second light emitting diode, second end of described 17 resistance is connected with the anode of described 3rd light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420519862.0U CN204188793U (en) | 2014-09-10 | 2014-09-10 | A kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420519862.0U CN204188793U (en) | 2014-09-10 | 2014-09-10 | A kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204188793U true CN204188793U (en) | 2015-03-04 |
Family
ID=52620776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420519862.0U Active CN204188793U (en) | 2014-09-10 | 2014-09-10 | A kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204188793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110413036A (en) * | 2018-04-27 | 2019-11-05 | 华为技术有限公司 | Adjust the device and electronic equipment of voltage |
-
2014
- 2014-09-10 CN CN201420519862.0U patent/CN204188793U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110413036A (en) * | 2018-04-27 | 2019-11-05 | 华为技术有限公司 | Adjust the device and electronic equipment of voltage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102621514A (en) | Electronic transformer verifying device | |
| CN2826445Y (en) | Intelligent line-checking machine | |
| CN103529423A (en) | Novel digital electric energy meter field calibration device and calibration method | |
| CN203786244U (en) | Electrical wiring line checking device | |
| CN203745538U (en) | Circuit of testing external power supply with switching of relay | |
| CN102360051A (en) | Multi-core cable detector | |
| CN204188793U (en) | A kind of little analog quantity electric energy meter and digitalized electrical energy meter calibration equipment | |
| CN209282899U (en) | A kind of airborne USB charging control circuit and power supply | |
| CN102711337B (en) | Light-emitting diode (LED) driving system | |
| CN104967478B (en) | A kind of intelligent substation luminous power test is divided adapter with multichannel | |
| CN208848054U (en) | A kind of tester of multichannel QC3.0 fast charge agreement | |
| CN203705518U (en) | Current measurement tool based on Hall sensors connected in parallel | |
| CN204214960U (en) | A kind of device detected for merge cells | |
| CN203825133U (en) | VGA cable testing instrument | |
| CN110488205A (en) | A kind of fault identification device | |
| CN103997101B (en) | A kind of charging circuit and a kind of electronic equipment | |
| CN208999502U (en) | A kind of intelligence adjustable battery group voltage analog device | |
| CN207764586U (en) | Optical communications module for surge protector state acquisition | |
| CN202330668U (en) | Multiplexing battery pack voltage measurement device | |
| CN208112981U (en) | A kind of Zigbee-WiFi bimodulus gateway | |
| CN104202208A (en) | A test fixture for a loopback function of a communication terminal | |
| CN205279897U (en) | A alternating current -direct current unit test device of gathering and editing for rocket measurement system | |
| CN207573010U (en) | Electric current indicating circuit and charging unit | |
| CN110441595A (en) | Three-phase intelligent electric-energy meter based on AC-DC high frequency conversion power supply | |
| CN106053985B (en) | A kind of Power over Ethernet test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |